Answer:
C. 30 -40
Explanation:
90% edge
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Answer:
Magnetite is black or brownish-black with a metallic luster, has a Mohs hardness of 5–6 and leaves a black streak.
It is called a nucleus. It's what determines what type of metal, gas, or whatever on the table.
I think it’s (d) I’m really sorry if I’m wrong
